Glass quality

Benefits resulting from better control of glass melting ate lower fuel consumption, better glass quality, more efficient production time, and better pollution control. Fewer operators are needed and working conditions are better. 

Subsequent to processing, an inspection is made for incomplete bonding, inside dirt, and glass quality. In the case of windshields, rigid optical standards must be met, and these must be evaluated for the completed windshield. Extensive test requirements are described in the appropriate codes (11,12,15,18—24), and they include light stability, resistance to optical distortion, humidity, boil test, abrasion resistance, and assorted impact tests. 

Thinner glass qualities down to 2 mm thick are produced by stretching the still workable glass on the tin-bed. The float-glass process supplies flat glass in mirror glass quality, but is restricted to soda-lime glass. 

Glasses frequently require composition control to ensure compliance with standards of chemical corrosion resistance, glass quality, resistance to crystallization, and density, color, and grinding or polishing characteristics in addition to optical properties. 

Frit 21 flexibility Fuel savings Production increase glass quality Oxygen cost... 

Improved glass quality resulting from improved furnace temperature profile, lower volatilization, and better batch line control and... 

Oxygen-based combustion delivers several control benefits that allow the operator to improve glass quality. Operators of regenerative furnaces are limited in tailoring the furnace profile by the flow patterns within the checkers. As noted previously, these flow patterns can change as the furnace ages. Oxy/fuel burners allow the... 

All the solvents used in the synthesis of the polyamic acids were obtained from Burdick and Jackson laboratories. All were "Distilled in Glass" quality.usually with a specified upper limit for the water content. Most of the solvents contained less than 0.009% water. No further purification of the solvents were attempted. 

Demonstrate that process variations can be detected and corrected without affecting glass quality ... 

A range of acceptable glass compositions was defined by the results of the sensitivity tests, and failure modes and effects analyses were performed to identify fault conditions that would impact glass quality, including its chemical composition, homogeneity, cracking rate, and propensity to crystallize. 

Very small quantities of Pu are carried over into the HLW stream and these are incorporated in the vitrified product. However, the mixed alkali borosilicate glass used in WVP can only accommodate -3-5 wt% PUO2, before glass quality and durability are impaired. The glass currently used is therefore unsuitable for immobilizing large quantities of Pu. 

The work carried out so far has indicated that the Auxiliary combustion firing technique combined with conventional firing should be capable of reducing NOx on most conventional end-fired container furnaces to 500 mg/m (n) ( 8%02) without loss of production, glass quality, efficiency or damage to the furnace. Although no Industrial testing has been carried out on cross-... 

The equipment required is simple and existing controls can be modified to accommodate the Auxiliary gas so capital costs are low. Indications are that there will be no energy penalty and possible an improvement in efficiency. It may be that the process can be optimised for energy saving and NOx reduction. The method also eliminates the additional energy and CO2 emissions associated with almost aU post-furnace clean up techniques. Glass quality and puU rates do not appear to be affected by the process. 

SSIIP Control Of Feeder Job Change should setup feeder optitnaly (glass quality) and efficiently (save energy), in minimal time after job change. 

The characteristics of the medicinal product define the properties needed to protect the product. For example, the glass quality requirements for injections or eye drops are different from those for an oral medicine. 

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